QUATERNARY AMMONIUM PHOSPHONIUM AND ARSONIUM CATALYSTS FOR THE PRODUCTION OF POLYCARBONATES BY THE TRANSESTERIFICATION METHOD
United States Patent 3442854
US Patent References:
Aromatic carbonate resins and preparation thereof
- - 3153008
Process for preparation of polycarbonates employing phosphonium catalysts
- - 3193529
Process for preparation of polycarbonates employing arsonium catalysts
- - 3193530
/3227681.html
- - 3227681
Manufacture of polycarbonates using tertiary amines, quaternary amines and salts thereof as catalysts
- - 3275601
Aromatic carbonate resins and preparation thereof
- - 3153008
Process for preparation of polycarbonates employing phosphonium catalysts
- - 3193529
Process for preparation of polycarbonates employing arsonium catalysts
- - 3193530
/3227681.html
- - 3227681
Manufacture of polycarbonates using tertiary amines, quaternary amines and salts thereof as catalysts
- - 3275601
Inventors:
Curtius, Ulrich
Bottenbruch, Ludwig
Schnell, Hermann
Bottenbruch, Ludwig
Schnell, Hermann
Publication Date:
05/06/1969
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Export Citation:
Assignee:
BAYER AG
Primary Class:
Other Classes:
528/200, 528/204, 528/201, 528/171, 528/370, 528/199, 528/196, 528/371, 528/202
International Classes:
C08G64/30; C08G64/00; C08G17/13; C08G17/003